http://www.animenewsnetwork.co.uk/news/2014-07-10/last-emperor-honneamise-composer-ryuichi-sakamoto-diagnosed-with-cancer/.76513
As a big fan of YMO and some of the soundtrack work he's done (I love the Tony Takitani OST), this is a bummer. I hope he makes it through OK. :/
edit: English statement from Sakamoto's website: http://sitesakamoto.com/images/top/message20140710-02.svg